<script setup lang="ts">
import { Toast, type FormInstance } from 'vant'
import { onUnmounted, ref } from 'vue'
import { mobileRules, passwordRules, codeRules } from '@/utils/rules'
import { loginByPassword, sendMobileCode, loginByMobile } from '@/services/user'
import { useUserStore } from '@/stores'
import { useRoute, useRouter } from 'vue-router'

// 1. 密码登录
const agree = ref(false)
const mobile = ref('')
const password = ref('')
const show = ref(false)

const store = useUserStore()
const router = useRouter()
const route = useRoute()
// 表单提交
const login = async () => {
  if (!agree.value) return Toast('请勾选我已同意')
  // 验证完毕，进行登录
  const res = isPass.value
    ? await loginByPassword(mobile.value, password.value)
    : await loginByMobile(mobile.value, code.value)
  store.setUser(res.data)
  // 如果有回跳地址就进行回跳，没有跳转到个人中心
  router.replace((route.query.returnUrl as string) || '/user')
  Toast.success('登录成功')
}

// 2. 实现密码登录和短信登录切换，验证码校验
const isPass = ref(true)
const code = ref('')

const form = ref<FormInstance>()
const time = ref(0)
let timeId: number
const send = async () => {
  if (time.value > 0) return
  await form.value?.validate('mobile')
  await sendMobileCode(mobile.value, 'login')
  Toast.success('发送成功')
  time.value = 60
  // 倒计时
  clearInterval(timeId)
  timeId = window.setInterval(() => {
    time.value--
    if (time.value <= 0) window.clearInterval(timeId)
  }, 1000)
}
onUnmounted(() => {
  window.clearInterval(timeId)
})

const qqUrl = `https://graph.qq.com/oauth2.0/authorize?client_id=102015968&response_type=token&scope=all&redirect_uri=${encodeURIComponent(
  import.meta.env.VITE_APP_CALLBACK + '/login/callback'
)}`
</script>

<template>
  <div class="login-page">
    <cp-nav-bar right-text="注册" @click-right="$router.push('/register')"></cp-nav-bar>
    <div class="login-head">
      <h3>{{ isPass ? '密码登录' : '短信验证码登录' }}</h3>
      <a href="javascript:;" @click="isPass = !isPass">
        <span>{{ !isPass ? '密码登录' : '短信验证码登录' }}</span>
        <van-icon name="arrow"></van-icon>
      </a>
    </div>
    <van-form autocomplete="off" @submit="login" ref="form">
      <van-field
        v-model="mobile"
        name="mobile"
        :rules="mobileRules"
        placeholder="请输入手机号"
        type="tel"
      ></van-field>
      <van-field
        v-if="isPass"
        v-model="password"
        :rules="passwordRules"
        placeholder="请输入密码"
        :type="show ? 'text' : 'password'"
      >
        <template #button>
          <cp-icon @click="show = !show" :name="`login-eye-${show ? 'on' : 'off'}`"></cp-icon>
        </template>
      </van-field>
      <van-field v-else v-model="code" :rules="codeRules" placeholder="短信验证码">
        <template #button>
          <span class="btn-send" :class="{ active: time > 0 }" @click="send">
            {{ time > 0 ? `${time}s后再次发送` : '发送验证码' }}
          </span>
        </template>
      </van-field>
      <div class="cp-cell">
        <van-checkbox v-model="agree">
          <span>我已同意</span>
          <a href="javascript:;">用户协议</a>
          <span>及</span>
          <a href="javascript:;">隐私条款</a>
        </van-checkbox>
      </div>
      <div class="cp-cell">
        <van-button block round type="primary" native-type="submit"> 登 录 </van-button>
      </div>
      <div class="cp-cell">
        <a href="javascript:;">忘记密码？</a>
      </div>
    </van-form>
    <div class="login-other">
      <van-divider>第三方登录</van-divider>
      <div class="icon" id="qq">
        <a @click="store.setReturnUrl($route.query.returnUrl as string)" :href="qqUrl">
          <img src="@/assets/qq.svg" alt="" />
        </a>
      </div>
    </div>
  </div>
</template>

<style lang="scss" scoped>
@import '@/styles/login.scss';
</style>
